Method and apparatus for processing coded aperture radar (CAR) signals

a technology of aperture radar and coded aperture, applied in the direction of reradiation, measurement devices, instruments, etc., can solve the problems of significant computation, no known prior art for processing methods and hardware for car signals, and often prohibitive amount of memory
US20150160335A1Active Publication Date: 2015-06-11HRL LAB
6 Cites 20 Cited by

Patent Information

Authority / Receiving Office
US Ā· United States
Current Assignee / Owner
HRL LAB
Publication Date
2015-06-11

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A radar system in which Coded Aperture Radar processing is performed on received radar signals reflected by one or more objects in a field of view which reflect a transmitted signal which covers a field of view with K sweeps and each sweep including Q frequency changes. For Type II CAR, the transmitted signal also includes N modulated codes per frequency step. The received radar signals are modulated by a plurality of binary modulators the results of which are applied to a mixer. The output of the mixer, for one acquisition results in a set of QĀ·K (for Type I CAR) or QĀ·KĀ·N (for Type II CAR) complex data samples, is distributed among a number of digital channels, each corresponding to a desired beam direction. For each channel, the complex digital samples are multiplied, sample by sample, by a complex signal mask that is different for each channel.
Need to check novelty before this filing date? Find Prior Art

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to and the benefit of U.S. Provisional Patent Application Ser. No. 61 / 912,990, filed Dec. 6, 2013 and entitled ā€œA Method and Apparatus for Processing Coded Aperture Radar Signalsā€. The disclosure of that U.S. Provisional Patent Application Ser. No. 61 / 912,990, is hereby incorporated herein by this reference.

[0002] This application is related to U.S. patent application Ser. No. 13 / 490,607 filed Jun. 7, 2012 and entitled ā€œCoded Aperture Beam Analysis Method and Apparatusā€, the disclosure of which is hereby incorporated herein by reference.

[0003] This application is also related to U.S. patent application Ser. No. 13 / 725,621, filed Dec. 21, 2012 and entitled ā€œCoded Aperture Beam Analysis Method and Apparatusā€, the disclosure of which is hereby incorporated herein by reference.

[0004] This application is also related to U.S. patent application Ser. No. ______ filed on the same date as this application, Dec. 4, 201...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More